Patents by Inventor Hongzhi HE

Hongzhi HE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10822881
    Abstract: A split roller cone and polycrystalline diamond compact (PDC) composite drill bit, including a PDC bit module, a split roller cone bit module, and a drill bit body module. The split roller cone bit module has split structure, and during the operation, the lower roller cone body and the upper roller cone body revolve with the drill bit, and rotate around the axle neck of the palm respectively, thereby achieving the task of scraping and breaking rocks. The tooth scraping efficiencies of the small-end ring gear and the middle ring gear are improved. The split roller cone bit module, the PDC bit module, and the drill bit body module can be mass-produced. The split roller cone bit module and the PDC bit module can be quickly assembled and disassembled with the drill bit body module and different sizes of PDC bit modules are assembled with the bit body module.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: November 3, 2020
    Assignee: SOUTHWEST PETROLEUM UNIVERSITY
    Inventors: Jialin Tian, Yinglin Yang, Hongzhi He, Lin Yang, Jie Xiong, Yi Zhou, Siqi Zhou, Genyin Li
  • Publication number: 20190360274
    Abstract: A split roller cone and polycrystalline diamond compact (PDC) composite drill bit, including a PDC bit module, a split roller cone bit module, and a drill bit body module. The split roller cone bit module has split structure, and during the operation, the lower roller cone body and the upper roller cone body revolve with the drill bit, and rotate around the axle neck of the palm respectively, thereby achieving the task of scraping and breaking rocks. The tooth scraping efficiencies of the small-end ring gear and the middle ring gear are improved. The split roller cone bit module, the PDC bit module, and the drill bit body module can be mass-produced.
    Type: Application
    Filed: May 22, 2019
    Publication date: November 28, 2019
    Applicant: Southwest Petroleum University
    Inventors: Jialin TIAN, Yinglin YANG, Hongzhi HE, Lin YANG, Jie XIONG, Yi ZHOU, Siqi ZHOU, Genyin LI